Ploidy breeding is an effective and economical breeding method in this way.

而倍性育种是一种有效、经济的育种方法。

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Noise barrier is a kind of effective and economical method to reduce traffic noise.

声屏障是降低交通噪声等流动性声源的一种有效而经济的方法。

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ConclusionsGuinea pig could be used as an effective and economical model of mammal in lens-induced myopia study.

结论豚鼠可作为研究透镜诱导性近视的一种有效、经济的模型哺乳动物。

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But it's readily available in Third World countries because it is economical and effective.

FORBES: Magazine Article

Fortifying the food handed out by the PDS would be an economical and effective way to lower rates of anaemia and increase nutrition.

ECONOMIST: Child malnutrition in India

The most economical and effective congestion solutions involve traditional road building and transit use, combined with traffic management strategies such as signal coordination and rapid crash removal, and demand management strategies like telecommuting and flexible work hours.

FORBES: Chris Christie and the Highway Spenders